I want something for my power that acts like a diode, but without the voltage drop, to protect the circuit from damage if the batteries are connected the wrong way. Is this even possible?
Protection – Essential Circuit Protection Techniques
protection
Best Answer
Put the diode across the supply connections so that it is non-conducting, with a fuse ahead of it. The diode will conduct if the supply is reversed, and blow the fuse. There won't be any voltage drop.